If you go into the record store this week and can't find anything to your liking, you're just not trying hard enough. U2 drops a Bomb this week, and Gwen Stefani delivers those hot tracks she's been singing about on What You Waiting For. But don't overlook the latest from Alison Krauss and Union Station or the singing debut of Robert Downey Jr. He's no Bruce Willis, and we mean that in a good way.